CVE-2023-21102 Privilege escalation in Android
A logic error in the Android kernel's EFI runtime wrapper allows local attackers to bypass shadow stack protection and escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-21102?
CVE-2023-21102 is a high-severity vulnerability in Google Android, published on 15 May 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In __efi_rt_asm_wrapper of efi-rt-wrapper.S, there is a possible bypass of shadow stack protection due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-260821414References: Upstream kernel
Weakness: CWE-754
Which versions are affected by CVE-2023-21102?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2023-21102?
Apply the vendor's patch.
Is CVE-2023-21102 being exploited?
There is no known exploitation of CVE-2023-21102 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-260821414, ASB-A-260821414, AZL-26872, DEBIAN-CVE-2023-21102, GHSA-h5cm-gwjx-3qq9, UBUNTU-CVE-2023-21102.